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Search: id:A090479
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| A090479 |
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Beginning with 1, least number such that filling the first n gaps with numbers from 1 to n yields primes in every case. |
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+0
2
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| 1, 3, 1, 9, 61, 1, 1, 31, 23, 39, 163, 29, 21, 47, 57, 13, 7, 221, 39, 73, 89, 63, 743, 451, 461, 111, 243, 73, 203, 31, 11, 417, 171, 147, 23, 191, 27, 37, 241, 1207, 1003, 143, 191, 243, 279, 247, 331, 233, 947, 107, 169, 673, 301, 2711, 977, 789, 111, 417, 221
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Replacing the first n commas with numbers from 1 to n yields a prime for all n.
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EXAMPLE
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113,11321,1132139,...are primes.
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CROSSREFS
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Cf. A090480.
Sequence in context: A105951 A038202 A128415 this_sequence A141903 A010289 A127613
Adjacent sequences: A090476 A090477 A090478 this_sequence A090480 A090481 A090482
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Dec 02 2003
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EXTENSIONS
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3 more terms from Ray G. Opao (1260(AT)email.com), Apr 07 2005
Many more terms from David Wasserman (wasserma(AT)spawar.navy.mil), Nov 17 2005
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